Home / 5,163.57-7,125.89-2,805.86

Finding the Fourth Proportional to 5,163.57, 7,125.89 and 2,805.86

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Solution

The fourth proportional to 5,163.57, 7,125.89 and 2,805.86 is: 3,872.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,163.57 : 7,125.89 = 2,805.86 : x
  2. Step 2: Convert to fraction form
    5,163.57/7,125.89 = 2,805.86/x
  3. Step 3: Cross multiply
    5,163.57x = 7,125.89 × 2,805.86
  4. Step 4: Simplify right side
    5,163.57x = 19,994,200.06
  5. Step 5: Solve for x
    x = 19,994,200.06/5,163.57
  6. Step 6: Final answer
    x = 3,872.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.